Book cover of The Walls Have Ears: The Greatest Intelligence Operation of World War II by Helen Fry
History

The Walls Have Ears: The Greatest Intelligence Operation of World War II

A history of the elaborate and brilliantly sustained World War II intelligence operation by which Hitler’s generals were tricked into giving away vital Nazi secrets.
At the outbreak of World War II, MI6 spymaster Thomas Kendrick arrived at the Tower of London to set up a top secret operation: German prisoners’ cells were to be bugged and listeners installed behind the walls to record and transcribe their private conversations. This mission proved so effective that it would go on to be set up at three further sites—and provide the Allies with crucial insight into new technology being developed by the Nazis. […Learn More]

Europe

MI9: A History of the Secret Service for Escape and Evasion in World War Two

When Allied fighters were trapped behind enemy lines, one branch of military intelligence helped them escape: MI9. The organization set up clandestine routes that zig-zagged across Nazi-occupied Europe, enabling soldiers and airmen to make their way home. Secret agents and resistance fighters risked their lives and those of their families to hide the men.
 Drawing on declassified files and eye-witness testimonies from across Europe and the United States, Helen Fry provides a significant reassessment of MI9’s wartime role. […Learn More]